What problem does it solve? Breaking a large Feature into implementation-ready User Stories is slow and error-prone: stories get duplicated on re-runs, acceptance criteria leak implementation details, and dependency links are wired incorrectly. This Skill guides an iterative breakdown workflow that proposes stories, refines granularity with the user, then creates and links them in the issue tracker. ## Core Features & Use Cases - Iterative story breakdown: Proposes a story table with scope and dependencies, then merges, splits, or renames stories based on user feedback before creating anything. - Duplicate prevention on re-runs: Loads existing child stories under the Feature first so new stories never overlap with work already tracked. - Implementation-detail stripping: Rewrites acceptance criteria as observable Given/When/Then outcomes, removing file paths, symbol names, and API signatures. - Use Case: A product owner has Feature #4008989 for a mahjong club site dashboard and a PRD file. Run the Skill with the feature ID and PRD path to get a proposed story breakdown, approve it after one revision round, and have all stories created with predecessor links wired automatically. ## Quick Start Ask the AI to break down Feature 4008989 using the PRD at mahjong-site/plans/home-page-health-score-addin/prd.md into user stories with dependency links.